This banal Parisian entranceway is not what it seems.

The site where two doves fell in love.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This magnificent museum claims to house the cranium of a disciple and the skull of a pope.

One of the largest busts in the world celebrates the German city's erstwhile namesake.

A plaque on the side of a building is a small tribute to the woman who invented an iconic Berlin fast food.

Albert Einstein's head sticks out of a snail shell stacked on a rocket in this truly bizarre monument to the scientist.

While you wait to cross the street at a traffic light in Mainz, you might notice that the light is staring back at you.

This Kyoto Starbucks takes coffee drinkers back in time.

Visit an imposing 13th-century Transylvanian citadel lurking not far from the region's more heavily touristed attractions.

According to Greek mythology, this natural spring is the home of a freshwater nymph.

A brutalist gem towering over the heart of Milan.

The secret medieval communication system will whisk your words above the noise of the crowd.

Third time's a charm, or in this case, two testicles are.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

Artistic tombs, monuments, and a beautiful "Hall of Fame" lurk inside this cemetery.

A portrayal of two lamps embraced and in love.

The intricate geometry inside this Baroque-style dome was designed to create "terror of the human soul."

The astonishing collection of an infamous criminologist.

When this funny little building went up in the 19th century, most people thought it would simply fall over.

This fountain is dedicated to the workers who perished constructing the Fréjus Rail Tunnel.

This building has a giant piercing through one of its corners.